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  2. 1-Pentyne - Wikipedia

    en.wikipedia.org/wiki/1-Pentyne

    It is a terminal alkyne, in fact the smallest that is liquid at room temperature. The compound is a common terminal alkyne substrate in diverse studies of catalysis. The compound is a common terminal alkyne substrate in diverse studies of catalysis.

  3. Alkynylation - Wikipedia

    en.wikipedia.org/wiki/Alkynylation

    In organic chemistry, alkynylation is an addition reaction in which a terminal alkyne (−C≡CH) is added to a carbonyl group (C=O) to form an α-alkynyl alcohol (R 2 C(−OH)−C≡C−R). [1] [2] When the acetylide is formed from acetylene (HC≡CH), the reaction gives an α-ethynyl alcohol. This process is often referred to as ethynylation.

  4. 1-Decyne - Wikipedia

    en.wikipedia.org/wiki/1-Decyne

    It is a terminal alkyne. A colorless liquid, 1-decyne is used as a model substrate when evaluating methodology in organic synthesis . It participates in a number of classical reactions including Suzuki-Miyaura couplings , Sonogashira couplings , [ 1 ] Huisgen cycloadditions , [ 2 ] and borylations .

  5. Sonogashira coupling - Wikipedia

    en.wikipedia.org/wiki/Sonogashira_coupling

    The coupling of a terminal alkyne and an aromatic ring is the pivotal reaction when talking about applications of the copper-promoted or copper-free Sonogashira reaction. The list of cases where the typical Sonogashira reaction using aryl halides has been employed is large, and choosing illustrative examples is difficult.

  6. Alkyne zipper reaction - Wikipedia

    en.wikipedia.org/wiki/Alkyne_zipper_reaction

    These steps will be repeated, essentially moving the alkyne along the alkane chain until a terminal alkyne is achieved. [3] Once a terminal alkyne is achieved, the 3-aminopropylamine anion will attack and remove the terminal proton. However, the process stops there because the carbon-hydrogen bond electrons cannot form an additional pi-bond on ...

  7. Propargyl group - Wikipedia

    en.wikipedia.org/wiki/Propargyl_group

    Chemical structure of the propargyl group. In organic chemistry, the propargyl group is a functional group of 2-propynyl with the structure CH≡C−CH 2 −.It is an alkyl group derived from propyne (HC≡C−CH 3).

  8. Romance (guitar piece) - Wikipedia

    en.wikipedia.org/wiki/Romance_(guitar_piece)

    [23] [24] [citation needed] Although some correlation can be made between Beethoven's Moonlight Sonata (especially the arpeggio), the Romance guitar piece and the Ukrainian folk song, the Ukrainian version has enjoyed much success through Eastern Europe and Russia and is vastly different from the Spanish/Argentine song and its various ...

  9. Terminal alkene - Wikipedia

    en.wikipedia.org/wiki/Terminal_alkene

    There are two types of alpha-olefins, branched and linear (or normal). The chemical properties of branched alpha-olefins with a branch at either the second (vinylidene) or the third carbon number are significantly different from the properties of linear alpha-olefins and those with branches on the fourth carbon number and further from the start of the chain.

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